<template>
  <div>
    <h1>hello</h1>
    {{count}}
  </div>
</template>

<script>
export default {
    name:'Hello',
    data(){
        return {
            count:0
        }
    },
    mounted(){
        this.$bus.$on('count',(count)=>{
            this.count = count
        })
    }
}
</script>

<style>

</style>